For the third time in three weeks, a water main broke in Woodacre near Central Avenue.

The latest break occurred at 3:25 a.m. Thursday. The water flow was stopped after 29 minutes. Roughly 3,000 gallons of water escaped from the 6-inch line.

There were also breaks on Oct. 6 and 8. The Marin Municipal Water District has no explanation for the rash of water line breaks in the area.

Two different lines have broken. Both lines, installed during the 1960s, carry water into Woodacre from a holding tank via gravity. The district has a fireflow master plan that is systematically replacing many older pipes, but the Woodacre mains are not part of that schedule.